This Mole Set contains samples of four different metals and helps students to visualise a mole of a substance in a solid state, as well as developing a better understanding of the concept of the mole, mass, molar mass, along with the differing properties of the various metals. The set contains four element specimens: copper, iron, zinc and aluminium, each containing approximately one mole of the element. Comparison of each sample, side-by-side, clearly shows that the same molar amount of different elements have different masses and occupy different volumes, due to each element having a different atomic mass and density.